PacTrans News

  • January 25, 2013

    PacTrans Call for Collaborative Regional Proposals

    PacTrans is soliciting REGIONAL proposals for the second-year of funding for the PacTrans Region 10 University Transportation Center (UTC) based on the following theme:

    Safe and Sustainable solutions for the diverse transportation needs of the Pacific Northwest

    We anticipate funding to be available around July 1, 2013 and all work should be completed by Nov 1, 2014. All proposals need to be uploaded onto the PacTrans website at the “Proposal Submission” link.

    Each proposal can be for up to $200K of federal funds (with a required 1:1 non-federal match).

    Due dates:

    • Two page proposal: March 1, 2013
    • Decisions to bidders (rejections or request for full proposals): April 1, 2013
    • Full proposal: May 1, 2013
  • January 4, 2013

    Region 10 Transportation Consortium Reception at the TRB

    When: Tuesday, January 15, 2013 from 5:30pm to 7:30pm
    Where: Marriott Wardman Park Hotel, Washington, D.C. at the Stone’s Throw Restaurant and Bar

    View the PDF here

    The Pacific Northwest Transportation Consortium (PacTrans), in partnership with AUTC, TranLIVE and OTREC, invites you to a reception for friends and alumni during the Transportation Research Board (TRB) 92nd Annual Meeting.
    For more information, please contact: pactrans@uw.edu

  • November 14, 2012

    PacTrans Seminar Series: Calibration of Micro-Simulation Models Using ITS Data: Lessons Learned

    When: Wednesday, November 14, 2012 from 2:30pm to 4:30pm
    Where: In UW Seattle Campus – HUB 332
    View the PDF here

    In order for a traffic micro-simulation model to be effective, it must be able to replicate both supply and demand characteristics, as well as their interaction. That is, the simulation model must be properly calibrated. The recent widespread deployment of ITS in North America has provided an opportunity to obtain significant amounts of traffic related data on a point, link, and trip basis. In addition, there has been a corresponding increase in the quality and quantity of micro-simulation models that can be used to model transportation systems. A methodology for calibrating traffic micro-simulation models so that the simulation results, such as travel time, represent the observed distributions obtained from the field will be presented. The focus of the talk will be on lessons learned from various calibration-related research projects over the past ten years. The seminar will conclude with a discussion of current and future research initiatives in this area.

  • October 29, 2012

    PacTrans External Advisory Board Meets

    HIThe PacTrans External Advisory Board (EAB) met on the UW campus on Monday, Oct. 29, 2012 for the very first time. The EAB, which will meet twice a year, will help review PacTrans activities and provide advice and vision on strategic directions. Members of the EAB include directors from the research office of the state DOTs in Region 10 and representatives from other transportation agencies, private industries, and communities.

  • October 24, 2012

    PacTrans Seminar Series: Discrete Choice Analysis for Travelers: A Semi-parametric Approach

    When: October 24, 2012 from 2:30pm to 3:30pm
    Where: More 234

    Professor Baibing Li from Loughborough University of UK will visit the University of Washington and deliver a seminar talk on campus. You are cordially invited to join his seminar.

    Discrete choice modelling is a widely used econometric approach to analyse the behaviour of travellers. The multinomial logit model is one of the most commonly used models in discrete choice analysis. This research develops a new model, semi-parametric multinomial logit model. The developed model links travellers’ attributes and alternatives to the choice probabilities via a sensitivity function. This sensitivity function reflects the degree of travellers’ sensitivity to the changes in the travelling costs. A Bayesian approach is investigated to draw statistical inference for the semi-parametric logit model. An empirical study on travellers’ value of time that involves stated preferences about two train-related alternatives and two bus-related alternatives is conducted to illustrate the developed model.
    Read More

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